Listening 1-19.
A: They measured the depths of sea water.
B: They analyzed the water content.
C: They explored the ocean floor.
D: They investigated the ice.
A: They measured the depths of sea water.
B: They analyzed the water content.
C: They explored the ocean floor.
D: They investigated the ice.
举一反三
- The water activity of ice is smaller than water.
- More than seventy percent of the water on the earth is sea water.
- Which of the following types of water might be included at the menu? ( ) A: Sparkling water. B: Tap water. C: Still water. D: Ice water.
- Under the same conditions, fresh water evaporates faster than sea water.
- Under the same conditions, fresh water evaporates faster than sea water. A: 正确 B: 错误